An Executive Management Team comprised of administrative and clinical leaders provides direction and quality assurance to the organization. UMC's central administration is based in Eagle
Pass.
Each main clinic in the UMC system has a Clinic Manager and local management team. The Clinic Manager along with the management team supervises the day-to-day operations of the clinic. Each
site has programs that are tailored to meet the special strengths and needs of its community. All Clinic Managers/Coordinators are under the supervision of the Director of Operations.
Chief Executive Officer
William Worrell, BSRT(R), MHA has served as the Chief Executive Officer at United Medical Centers since January 2016. He has 15+ years in the medical field representing Clinical, Educational, and Managerial experience. William started his career at Mercy Hospital in Springfield, MO as OR Radiologic Technologist, ER Trauma Team and Radiologic Technologist Clinical Instructor. From April 2013 to December 2015 he served as Director of the Ryan White Program at Maverick County Hospital District along with Interim CEO Role February 2014 to April 2014. The Ryan White Program helps those in the community afflicted by HIV/AIDS and educates on how to protect from exposure. Since his January 2016 hire at UMC there has been a strong expansion in quality efforts, expansion of providers, increase in patient access and overall improvement in the quality of patient services.
Worrell earned his Bachelor of Science in Radiologic Technology with a minor in Healthcare Law and Masters of Healthcare Administration both from Missouri State University in Springfield, MO. Currently, William is enrolled in a Masters of Public Health program through New Mexico State University.
Additional Education Certifications include:
William is member of American College of Healthcare Executives (ACHE) and American Society of Radiologic Technologists (ASRT). He additionally serves the community as a member of the Eagle Pass Business and Economic Development Council and as the Vice-President of AEHC. As an active member in the Texas Association of Community Health Centers he serves on the Policy/Issues Committee, Compliance/Audit Committee and Purchasing Group Board of Directors.
He has lived in Eagle Pass, TX since December 2012.
Chief Financial Officer
Julie Rivera serves as Chief Financial Officer of United Medical Centers, a position she has held since January 2026. She brings more than 13 years of experience in public-sector and nonprofit accounting and has been a valued member of the United Medical Centers team for the past eight years.
Throughout her career with UMC, Julie has developed a strong understanding of the unique financial responsibilities and challenges involved in operating a Federally Qualified Health Center (FQHC). She values the opportunity to contribute to an organization whose mission extends beyond financial performance by helping ensure that quality, accessible healthcare remains available to the community.
Julie earned her Bachelor of Business Administration in Accounting from The University of Texas at San Antonio. She was born and raised in Brackettville, Texas, and graduated from Brackett High School in 2008.
Outside of her professional career, Julie enjoys spending time with her family and supporting her children as a dedicated sports mom. She has been married to her high school sweetheart for 14 years, and together they have three children, all of whom attend Eagle Pass ISD. Julie takes great pride in balancing her career, community, and family while supporting the mission and financial health of United Medical Centers.
Director of Operations
Lucia Rosas is the Director of Operations for United Medical Centers. Privileged to be a part of the UMC family since 2006, she has many years of healthcare experience with Federally Qualified Community Health Centers and UMC's tri-county service area of Maverick, Val Verde and Kinney counties. Lucia earned her Bachelor of Healthcare Administration from Texas State University in San Marcos, Texas. Born and raised in Eagle Pass, Lucia enjoys spending time with her family and is an active member of her community. She also actively participates with UMC as a member of the Texas Association of Community Health Centers and National Association of Community Health Centers.
